I tried out Casey last week - she is on the younger side, looks OK, nice Asian b-cups, however, her service is pretty limited. She is new to the game and only intends on staying for a short while, so she does the minimum: BLS, FS, DATY, no DFK or LFK. She's not a pro nor does she intend on staying on escort hence she said she's not opening up to more services yet.
While she's cute, she's not a complete package, if you like FS, she's fine, but if you want to do a bit more, she doesn't offer anything beyond BLS and FS.